Dental surveying apparatus.



R. L. HANAU.

DENTAL SURVEYING'APPARATUS.

APPLICATION FILED APR. 19. 1915.

/ 721/1004 ZZJZZ R. L. HANAU.

DENTAL SURVEYING APPARATUS. APPLICATION FILED APR. 19. 1915.

1;230,156. Patented June 19, 1917.

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neaoasa To all whom it may concern:

Be it known that i, Runonrn Hanan, a subject of the King of England,residing at New York, in the county and State of New York, have inventedcertain new and useful Improvements in Dental Surveying Apparatus, ofwhich the following 1s a full, clear, and exact specification. a

This invention relates to an apparatus for making a survey in threedimensions of the teeth and adjacent structures from plaster casts andto aid in obtaining the exact position of teeth to be regulated. Thisapparatus is designed to be used for studying normal and pathologicaldevelopments, and it may be employed advantageously by orthodontists toobtain the positions of teeth in malocclusion, and the contour lines .ofpalate asymmetry, in order to determine the best and easiest way toestablish normal occlusion of the teeth and symmetry of ad acent Anotherobject is to provide simple and inexpensive means or apparatus for thepurposes mentioned, which apparatus may be easily operated, is accurateand will not readily get out of order.

The invention Will be first hereinafter described in connection with theaccompanying drawings, which constitute a part of this application, andthen more spec fically defined in the claims at the end of thedescription.

In the accompanying drawings, wherein similar reference characters areused to designate corresponding parts throughout the several viewsFigure l is a side elevation of apparatus of the character describedconstructed substantially in accordance with this invention.

Fig. 2 is a top plan view of the plate for holding the paper on whichthe survey or plot is to be made.

Fig. 3 is a section on the line til -Ill". of Fig. 1.

Fig. 4 is a section on the line lV-IV of Fig. 1.

Fig. 5 is a section on the line V-V of Fig. 1.

Fig. 6 is a section on the line i l-VI of Fig. 1, and

flpeeification of Letters Patent.

Application filed April 19, 1915.

EN'EAL SURVEYING @PE'AEATUS.

Patented June 119, 1917..

Serial No. 22,429.

Fig. 7 is an end view of the plate shown in Fig. 2.

The apparatus is mounted on a platform 1 carrying at one side a rigidupright 2 hearing a horizontal plate 3 on its upper end. The under faceof said plate is flat-and its lateral edges are grooved, as at 4 in Fig.1, to receive and retain a sheet of paper or cardboard (not shown) onwhich the survey or plot is made.

The platform 1 also carries anadjustable V shorter upright 5 to theupper end of which a table 6' may be adjustably attached,-if desired, bya suitable clamp 50 or the like. Said table is provided with a clamp 7for securing the mold or cast to the table when the survey is beingmade. To this end, the clamp 7 has a horizontally extending arm 70carried by a pin 71 passed through the table 6 and adapted to bevertically adjusted by the nut 72 fitted on the screw-threaded lower endof said pin and having swivel connection with the plate. The upright 5is fastened at its lower end toa ball 8 which may be clamped in anydesired position in a correspondingly shaped socket 9' in the platformby a screw cap 10 best shown in Figs. 1 and 6. This cap is fitted With along operating handle 11 which extends beyond the edge of the table orplatform 1 so that it may readily be moved in either direction forloosening or tightening the cap against the ball. Y

The platform 1 is further provided With standard 12 fitted in a baseplate 13 which may be placed at any suitable point on the platform. T hestandard 12 carries an adjustable sleeve 14 having spaced straps or lugs15, 16, 17 and 18. The sleeve 14 has its upper end portionscrew-threaded as at 14*, tapered as at '14, and longitudinally slottedas at 14 Fi 1, and around this tapered end portion is fitted a clampingnut 140 having its screw-threaded bore correspondingly tapered as at 144so that byjscrewing said nut down upon said taperedend of the sleeve thelatter may be clamp ed at any de sired point on the standard, .The upperthree straps 15, 16 and 17 have pivotally secured thereto for swingingin a vertical plane, levers or arms 'l9, 20 and 21, respectively, arms19 and 21 being of the same 'length. The lowest strap 18 supports aninverted screw 22 having the upper face of its head 23 calibrated, as at24, around its peripheral portion. The screw 22 extends up through atapped sleeve 22 pivoted on the arm 21, and said sleeve carries adepending pointer 25 which cooperates with clination-the arms may be.The sleeve 26 is slotted at 27 and in said sleeve is loosely fitted arod 28 which is pointed, as at 29 at its upper end. Sleeve 26 carries abent depending indicator 30 at its lower end, said indicator beingprovided with a spherical knob 31 on its lower end to prevent it fromscratching the casting or mold. The rod 28 is connected to the arm 20 bymeans of pivoted links 32 and a cross pin 33 passed through the slots 27and the rod.v Through these connections it is possible to raise andlower the rod 28 with thearm 20. Said arm is provided with an operatingfinger 34;

' the arms 19 an extending at the opgosite'side of its pivot on thestrap 16, so t at it may be actuated without hav' 3(1) grasp said armbetween In operation, the screw 22 is turned for either raising orlowering the arms and sleeve 26 untll the tip 31 comes into contact witha lioint on. a casting or mold secured to the ta 1e 6 by the clamp 7.The elevation of said point may then be read on the scale 24, and thepoint located on the paper carried by the plate 3 by pressing down onthe operating finger of the lever 20 which will move the rod 28 upwarduntil its pointed upper end 29 strikes said paper, or papers" withcarbon sheets between, as maybe used for making duplicates. In, the sameman- 1 ner any number or all of the points on the casting or model maybe lotted out or surveyed, the standard 12 with its base 13 being freelymovable on the latform 1 to br ng the knob 31 of the in icator in turnover each point on the casting or model to be surveyed. The altitude orelevation of each point is shown by the readings on the graduated wall23.

Having thus described my invention, what I claim as new and desireto-secure by Letters Patent of the United States is 1. The combinationwith a supporting means for a sheet of paper, of means for holding anarticle to be surveyed, an indicator and means to support the same,means for vertically adjusting the indicator, whereby it may be broughtinto contact with a point on the article, and an axially movable memberon said indicator for marking the point on the paper. 2. The combinationwith a supporting means for a sheet of paper, of means for holding anarticle to be surveyed, an indicator and means to support the same,means for vertically adjustlng the indicator, whereby it maybe broughtinto contact with a point on the article, means for indicating thealtitude of said point, and an axially movable member on, said indicatorfor marking the location of said point on the paper.

3. The combination with means for holding an article to be surveyed, ofa swinging member, ,a support therefor, an indicator carried by theswinging member and adapted to be brought into contact with a point'onthe article, means for moving said swinging member to bring theindicator into contact with said point and means for indicating therelative altitude of, the indicater in different vertical positions.

4. The combination with means for holding an article to, be surveyed, ofa standard'i I a pair of arms-pivotally connected to sai standard, anindicator, means for pivotally carrying the indicator at the outerendsof said arms whereby said indicator may he brought into contact with apoint on the article, a screw carried by the standard and havingthreaded connection with one of the arms for moving the indicator intocontact with said point, said screw having a scale thereon, and a ointeronthe arm for 005 crating with said scale for indicating the it titudeof said point.

5. The combination'with means for hold-- ing an article-to be surveyed,of a standard, a pair of arms pivotally connected to. the standard asleeve pivotally carried by the outer ends of said arms, an indicator onone end of said sleeve and adapted to he brought into contact with apoint on .the article, means for indicating the relative altitude of theindicator in difierent vertical positions, a plate for holdings. sheetof paper above the article supporting means, and an axially movable rodfitted in said sleeve for marking said point on the paper.

6. The combination with means for holding an article to be surveyed, ofa standard, a pair of arms pivotally connected to the standard, a sleevepivotally carried by the outer ends of said arms, an indicator on saidsleeve and adapted to be brought into contact with a point on thearticle, means for indicating the relative altitude of the indicator indifferent vertical positions, a,

plate for holding a sheet. of paper above the same longitudinallyindependenly oithe the article supporting means, an axially sleeve.movable rod fitted in said sleeve for mark- In testimony whereof I havesigned my ing said point on the paper, and another name to thisspecification.

5 arm. pivotally connected to the standard and I operatively attached tosaidorod for moving RUDOLPH L. HANAU.

